CVE-2022-49390 (GCVE-0-2022-49390)
Vulnerability from cvelistv5
Published
2025-02-26 02:11
Modified
2025-05-04 12:44
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: macsec: fix UAF bug for real_dev Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following: ================================================================== BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161 Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748 Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327 After commit faab39f63c1f ("net: allow out-of-order netdev unregistration") and commit e5f80fcf869a ("ipv6: give an IPv6 dev to blackhole_netdev"), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in macsec_free_netdev() to fix the problem.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2bce1ebed17da54c65042ec2b962e3234bad5b47
Version: 2bce1ebed17da54c65042ec2b962e3234bad5b47
Version: 2bce1ebed17da54c65042ec2b962e3234bad5b47
Version: 1861904a6092ed411203c6a02c75bfc45b27cc3c
Version: 3a2675a2d97a68332fa5c33043038bfeb31455a8
Version: b0add6db3d5ec4561cab257358871a9d3df7f0a3
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49390\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T17:58:33.560218Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T17:58:35.320Z\"}}], \"cna\": {\"title\": \"macsec: fix UAF bug for real_dev\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2bce1ebed17da54c65042ec2b962e3234bad5b47\", \"lessThan\": \"78933cbc143b82d02330e00900d2fd08f2682f4e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2bce1ebed17da54c65042ec2b962e3234bad5b47\", \"lessThan\": \"d130282179aa6051449ac8f8df1115769998a665\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2bce1ebed17da54c65042ec2b962e3234bad5b47\", \"lessThan\": \"196a888ca6571deb344468e1d7138e3273206335\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1861904a6092ed411203c6a02c75bfc45b27cc3c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a2675a2d97a68332fa5c33043038bfeb31455a8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b0add6db3d5ec4561cab257358871a9d3df7f0a3\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/macsec.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.17.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/macsec.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/78933cbc143b82d02330e00900d2fd08f2682f4e\"}, {\"url\": \"https://git.kernel.org/stable/c/d130282179aa6051449ac8f8df1115769998a665\"}, {\"url\": \"https://git.kernel.org/stable/c/196a888ca6571deb344468e1d7138e3273206335\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmacsec: fix UAF bug for real_dev\\n\\nCreate a new macsec device but not get reference to real_dev. That can\\nnot ensure that real_dev is freed after macsec. That will trigger the\\nUAF bug for real_dev as following:\\n\\n==================================================================\\nBUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662\\nCall Trace:\\n ...\\n macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662\\n dev_get_iflink+0x73/0xe0 net/core/dev.c:637\\n default_operstate net/core/link_watch.c:42 [inline]\\n rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54\\n linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161\\n\\nAllocated by task 22209:\\n ...\\n alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549\\n rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235\\n veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748\\n\\nFreed by task 8:\\n ...\\n kfree+0xd6/0x4d0 mm/slub.c:4552\\n kvfree+0x42/0x50 mm/util.c:615\\n device_release+0x9f/0x240 drivers/base/core.c:2229\\n kobject_cleanup lib/kobject.c:673 [inline]\\n kobject_release lib/kobject.c:704 [inline]\\n kref_put include/linux/kref.h:65 [inline]\\n kobject_put+0x1c8/0x540 lib/kobject.c:721\\n netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327\\n\\nAfter commit faab39f63c1f (\\\"net: allow out-of-order netdev unregistration\\\")\\nand commit e5f80fcf869a (\\\"ipv6: give an IPv6 dev to blackhole_netdev\\\"), we\\ncan add dev_hold_track() in macsec_dev_init() and dev_put_track() in\\nmacsec_free_netdev() to fix the problem.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.15\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.154\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.19.84\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.3.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T12:44:34.195Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49390\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T12:44:34.195Z\", \"dateReserved\": \"2025-02-26T02:08:31.561Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:11:23.327Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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